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WD GOLD WD121KRYZ 12TB, SATA III 3.5", 256MB 7200RPM, 255MB/s, CMR, Enterprise
WD Gold Enterprise Class SATA Hard Drive
Conquer tough workloads with enterprise-class WD Gold™ HDDs. Available in 1TB to 18TB1 capacities, this highly reliable solution for demanding storage environments provides up to 2.5M hours MTBF, vibration protection technology and a low power draw thanks to HelioSeal™ technology [for 12TB and above]. Specifically designed for use in enterprise-class data centers and storage systems, the WD Gold SATA HDD delivers the world-class performance you expect from Western Digital® hard drives.
TECHNICAL SPECIFICATIONS
| PRODUCT FEATURES | |
| Capacity | 12TB |
| Interface | SATA 6BG/s |
| Format: Sector size (bytes)** | 512e |
| Native Command Queuing | Yes |
| Form Factor | 3.5-inch |
| RoHS Compliant*** | Yes |
| PERFORMANCE | |
| Data Trasnfer Rate‡ (max sustained) | 255 MB/s |
| Performance Class | 7200 RPM Class |
| Cache‡‡ | 256 MB |
| RELIABILITY | |
| MTBF (hours) | 2 500 000 |
| Annualized Failure Rate (AFR, %)‡‡‡ | 0,35 |
| Load/unload cycles (minimum) | 600 000 |
| Limited Warranty (years) | 5 |
| POWER MANAGEMENT | |
| Average Power Requirements | Operational§: 6.9 W Idle§§: 5.5 W Power efficiency indes (W/TB,idle): 0,4 |
| ENVIRONMENTAL SPECIFICATIONS | |
| Shock (Read/Write) | Operating (half-sine wave, 2ms): 70G/70G Non-operating (half-sine wave, 2ms): 300G (2ms) |
| Temperature | Operating: 5° C to 60° C Non-operating: -40° C to 70° C |
| Acoustics (average) | Idle Mode: 20 dBA Seek Mode: 36 dBa |
| PHYSICAL DIMENSIONS | |
| Height (max) | 1.028 in. (26.1 mm) max |
| Lenght (max) | 5.787 in. (147.0 mm) max |
| Width (± .01 in.) | 4.0 in. (101.6 mm) ± .01 in. |
| Weight | 1.46 lb. (.66 kg) ± 10% |
*CAPACITY: One megabyte (MB) is equal to one million bytes, one gigabyte (GB) is equal to 1,000MB (one billion bytes), and one terabyte (TB) is equal to 1,000GB (one trillion bytes) when referring to storage capacity. Accessible capacity will vary from the stated capacity due to formatting, system software, and other factors.
**FORMAT: 512e: Advanced Format drive with 512-byte logical sectors and 4K (4096-byte) physical sectors; 512n: Native 512-byte logical and physical sectors
*** RoHS COMPLIANT: Western Digital hard drive products manufactured and sold worldwide after June 8, 2011, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.
‡ DATA TRANSFER RATE: MB/s is 1,000,000 bytes
‡‡ CACHE BUFFER: Portion of buffer capacity used for drive firmware
‡‡‡ MTBF and AFR: Specifications are based on a sample population and are estimated by statistical measurements and acceleration algorithms under typical operating conditions for this drive model. MTBF and AFR ratings do not predict an individual drive’s reliability and do not constitute a warranty.
§ OPERATIONAL POWER: 8K Queue Depth = 1 @ 40 IOPS
§§ IDLE POWER: Based on use of Idle_A
§§§ Some models of Ultrastar are identical in form, fit and function to the respective WD Gold™ model. The only differences are limited to the brand, label and ID string as reported by the firmware. For these drives, any previously completed qualification of the equivalent Ultrastar™ models should not require a re-qualification."
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